Digital communication switching exchange



FIG. 1 is a front perspective view of a digital communication switching exchange showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 6 is a rear elevational view thereof.

The louvers on the front of the design are partially shown in FIGS. 1 and 4 for convenience of illustration, it being understood that the louvers continue across the rectangular panels. The design is shaded to indicate contrast. 

The ornamental design for a digital communication switching exchange, substantially as shown and described. 